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Full Discussion: Array inside an array
Top Forums UNIX for Advanced & Expert Users Array inside an array Post 302204094 by Yama on Tuesday 10th of June 2008 02:25:47 PM
Old 06-10-2008
Modifying the code from Perderabo, how would you handle different-sized arrays in the inner while loop? For example, let's change the code to be:

Code:
$ cat arrayloop
#! /usr/local/bin/bash

abc=(a b c x y)
def=(d e f z)
ghi=(g h i)
array1=(abc def ghi)
cnt=0
total_Array=${#array1[*]}

while [ $cnt -lt $total_Array ] ; do
        srch_fld=${array1[$cnt]}
        j=0
        while [ $j -le <????> ] ; do
                eval var1=\${$srch_fld[$j]}
                echo ${var1}
                ((j=j+1))
        done
        ((cnt=cnt+1))
done
exit 0
$ ./arrayloop
a
b
c
x
y

d
e
f
z

g
h
i

$

We can't use the original no_loop_thru variable since the arrays are of varying length. I realize we need to get the length of srch_fld but I'm unable to get the syntax right ...
 

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LEARN ABOUT PHP

array_intersect

ARRAY_INTERSECT(3)							 1							ARRAY_INTERSECT(3)

array_intersect - Computes the intersection of arrays

SYNOPSIS

       array array_intersect (array  $array1, array  $array2, [array  $...])

DESCRIPTION

       array_intersect(3)  returns  an	array  containing all the values of $array1 that are present in all the arguments. Note that keys are pre-
       served.

PARAMETERS

	      o $array1
		- The array with master values to check.

	      o $array2
		- An array to compare values against.

	      o $...
		- A variable list of arrays to compare.

RETURN VALUES

	Returns an array containing all of the values in $array1 whose values exist in all of the parameters.

EXAMPLES

       Example #1

	      array_intersect(3) example

	      <?php
	      $array1 = array("a" => "green", "red", "blue");
	      $array2 = array("b" => "green", "yellow", "red");
	      $result = array_intersect($array1, $array2);
	      print_r($result);
	      ?>

	      The above example will output:

	      Array
	      (
		  [a] => green
		  [0] => red
	      )

NOTES

       Note

	       Two elements are considered equal if and only if (string) $elem1 === (string) $elem2. In words: when the string	representation	is
	      the same.

SEE ALSO

       array_intersect_assoc(3), array_diff(3), array_diff_assoc(3).

PHP Documentation Group 													ARRAY_INTERSECT(3)
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